text: #pragma once
  #define _CRT_SECURE_NO_WARNINGS
  
  #include "structDef.h"
  #include <stdlib.h>
  #include <string.h>
  #include <stdio.h>
  
  void dataOut(categoryPtr headCat, clientPtr headCli, char* fname); //Puts data out to file
  
  void dataIn(categoryPtr headCat, clientPtr headCli, char* fname); //Input data from file to data structures